Meet the Smallest 15.6″ Laptop On the Planet The world’s only 15.6″ InfinityEdge display: The virtually borderless display maximizes screen space by accommodating a 15.6″ display inside a laptop closer to the size of a 14″, thanks to a bezel measuring just 5.7mm, 59% thinner than the MacBook Pro. One-of-a-kind design: Measuring in at a slim 11-17mm and starting at just under 4 pounds with a solid state drive, the XPS 15 is the world’s lightest 15-inch performance-class laptop.